LayerSpy ⚡

The Privacy-First, 100% Client-Side 3D Print G-Code Analyzer & Simulator

🔒 100% Local Processing & Privacy Guarantee

Your files and data NEVER leave your computer.

Unlike cloud-based slicers or online converters, LayerSpy processes, analyzes, and renders everything 100% client-side inside your web browser:

🛡️ Zero Server Uploads: When you open or drag & drop a .gcode file, it is parsed directly in memory on your device using a multi-threaded Web Worker.
💻 Client-Side WebGL Rendering: 2D and 3D toolpaths are rendered locally on your GPU using Three.js and hardware-accelerated shaders.
💾 Local Settings Storage: User preferences and language selections are stored strictly in your browser's local storage (localStorage). No telemetry, analytics tracking of file contents, or external database queries.
🚀 Confidential & NDA Ready: Safe for proprietary engineering prototypes, commercial 3D designs, and confidential G-Code.
🔌 PWA & Offline Capable: Installable as a Progressive Web App (PWA) and fully operational without an internet connection.

🚀 Next-Gen Toolpath Visualizer (2D & 3D):
- High-performance WebGL rendering with support for both lightweight line rendering and volumetric solid tubes.
- Multi-threaded streaming parser supporting large multi-hundred-megabyte G-Code files seamlessly.
🎛️ Dynamic Zen Mode & Multi-Screen Workspace:
- One-click sidebar collapse (Zen Mode ⛶) to maximize your 3D viewport.
- Fully responsive HUD toolbar and auto-compact layout for laptops and small monitors.
📐 Overhang Angle Radar & Bridge Detection:
- Color-coded overhang analysis (<45° Safe, 45–60° Moderate, 60–75° Steep, >75° Critical, Bridges).
🎯 Pressure Advance (PA) & Corner Bulge Auditor:
- Detects melt-zone pressure spikes and high deceleration points ($\Delta v > 60\text{ mm/s}$).
- Live simulator with direct Klipper (SET_PRESSURE_ADVANCE) and Marlin (M900) code embedding.
📡 VFA & Resonance Radar:
- Identifies motor vibration zones and surface ripple risks on outer walls.
🏎️ Real Kinematics Simulation (Klipper / Marlin):
- Forward/backward trapezoid motion planner calculating realistic print times based on acceleration, jerk, and square corner velocity.
🌐 100% Bilingual Localization:
- Instant toggle between English and German across all inspection panels, diagnostic linter alerts, and tooltips.

Frontend: Vanilla JavaScript (ES6+), HTML5 Canvas, WebGL, CSS Custom Properties
3D Engine: Three.js & OrbitControls
Streaming Engine: Web Workers with ReadableStream chunked binary parsing & Float32Array buffers
PWA: Service Worker caching for instant offline availability

Distributed under the MIT License. See LICENSE.md for more details.